(Reuters) - Davis Cup holders Argentina were relegated from the world group after 15 years among the tennis elite when they lost 3-2 to Kazakhstan in Astana on Sunday.
Mikhail Kukushkin beat U.S. Open quarter-finalist Diego Schwartzman 6-4 6-4 7-6(2) to give the home team an unassailable 3-1 lead and promotion in their playoff tie a year after their relegation.
